A pacemaker is a device which sends electrical signals to the heart triggering heartbeats when needed. There are many ways to implant and configure a pacemaker; it may beat the top chambers (atria), lower chambers (ventricles) or both. Some systems stimulate both the left and right ventricles together. Pacemakers generally treat abnormally slow heart rhythms and certain types of heart failure.
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2

Careful use:
Laser can be destructive so laser surgeons observe the area aimed at carefully and only apply the energy to the right spot. Observers if in the room can wear protective eyewear. The lasers are very precise and aiming is precise so damage from this treatment is rare.
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10

Ear pain or popping:
The care taker will experience similar feeling to being in an airplane. Since the caretaker is not using a mask he is not breathing 100% oxygen. Hence no risk of oxygen toxicity.
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16

Depends:
In case of disaster, the patient records might be lost if they are on paper or stored on a computer server. Nowadays, more and more doctors offices have "cloud based" EMRs (electronic med records) so even if a clinic were to be destroyed, the records are safe. It's a good idea to keep your own set of "records" in case of disaster (meds, important medical information) that you can take with you.
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17

Because:
they expose the care giver to body fluids which is how the virus is transmitted. As we have seen biohazard equipment is only protective if used properly. we have seen recently that despite the best of intentions, there have been breaches in technique resulting in infection among caregivers.
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18

Second Opinion:
This is not an unusual problem. You cam be transitioned to another anti-coagulant with the help of your cardiologist prior to the operation. The surgeon can then do the surgery and you can be placed back on your coumadin (warfarin). Discuss with your cardiologist about recommendations for another surgeon.
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20

I use fitbit:
I've been using fitbit daily for over 2 years. During the day it shows my activity patterns, and allows me to use that feedback to modify the behavior. For example if I have not met my step goal by dinner time a postrprandial walk becomes more attractive. At night, the fitbit can provide useful information regarding quality of sleep. The web software allows for tracking of calorie intake andweight.
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